A Study of Information Services Based on Personal Belongings. - Naoki Shimizu; Riko Yagiu; Masashi Saito (AINA, 2005)

Fast Device Discovery for Vehicle-to-Pedestrian communication using wireless LAN. - Shintaro Fujikami; Takenori Sumi; Riko Yagiu; Yukimasa Nagai (CCNC, 2015)